Enable the embedded L1/EME support in WebView.

build/common.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 1260 matching lines @@
     # IPC fuzzer is disabled by default.
     'enable_ipc_fuzzer%': 0,
 
     # Whether or not to use "icu*.dat" file for ICU data.
     # Do not use it by default.
     'icu_use_data_file_flag%': 0,
 
     # Force disable libstdc++ debug mode.
     'disable_glibcxx_debug%': 0,
 
+    # Set to 1 to compile with the hole punching for the protected video.
+    'video_hole%': 0,
+
     'conditions': [
       # The version of GCC in use, set later in platforms that use GCC and have
       # not explicitly chosen to build with clang. Currently, this means all
       # platforms except Windows, Mac and iOS.
       # TODO(glider): set clang to 1 earlier for ASan and TSan builds so that
       # it takes effect here.
       ['os_posix==1 and OS!="mac" and OS!="ios" and clang==0 and asan==0 and lsan==0 and tsan==0 and msan==0', {
         'conditions': [
           ['OS=="android"', {
             # We directly set the gcc_version since we know what we use.
@@ skipping 1216 matching lines @@
       ['enable_ipc_fuzzer==1', {
         'defines': ['ENABLE_IPC_FUZZER=1'],
       }],
       ['OS=="win" and component=="shared_library"', {
         'dependencies': [
           # All targets in a component build must depend on chrome_redirects,
           # to ensure that certain calls go through it.
           '<(DEPTH)/chrome_elf/chrome_elf.gyp:chrome_redirects',
          ],
       }],
+      ['video_hole==1', {
+        'defines': ['VIDEO_HOLE=1'],
+      }],
     ],  # conditions for 'target_defaults'
     'target_conditions': [
       ['enable_wexit_time_destructors==1', {
         'conditions': [
           [ 'clang==1', {
             'cflags': [
               '-Wexit-time-destructors',
             ],
             'xcode_settings': {
               'WARNING_CFLAGS': [
@@ skipping 2472 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }